US3600995A - Plate shears - Google Patents

Plate shears Download PDF

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Publication number
US3600995A
US3600995A US3600995DA US3600995A US 3600995 A US3600995 A US 3600995A US 3600995D A US3600995D A US 3600995DA US 3600995 A US3600995 A US 3600995A
Authority
US
United States
Prior art keywords
pawl
support members
plate shears
plate
knife
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Other languages
English (en)
Inventor
Eduard A Hanni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haemmerle AG Maschinenfabrik
Original Assignee
Haemmerle AG Maschinenfabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Haemmerle AG Maschinenfabrik filed Critical Haemmerle AG Maschinenfabrik
Application granted granted Critical
Publication of US3600995A publication Critical patent/US3600995A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
    • B23D33/025—Guillotines with holding means behind the knives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
    • Y10T83/0419—By distorting within elastic limit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2198—Tiltable or withdrawable support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2209—Guide
    • Y10T83/2216—Inclined conduit, chute or plane

Definitions

  • Alll6l/68 ABSTRACT Plate shears having a frame, lower and 'upper, 2 6 m F reciprocable knives, spaced-apart groups of support members m m in the track in which the upper knife is movable, a locking U.S.Cl. 83/157, device for some of the support members, for holding them 83/ 165 with their upper contact surfaces flush with the table of the Int. Cl. 826d 7/06 shears, and control means for unlocking the locking device Field of Search 83/157, 81, after the upper knife has reached a predetermined position as 165 it moves along the track.
  • Plate shears are used for cutting plates of unlimited lengths and widths. During the cutting operating the off-cut is pressed by the cutting knife obliquely downwardly, and the disadvantage exists that with longer cuts the off-cut is greatly deformed and considerable twisting could arise. In this way the cut edge is not clean and the forward movement of the plate is made difficult.
  • a movable cutting knife cooperates with contra-bearings which comprise pistons arranged in cylinders and acted on by a pressure medium.
  • contra-bearings which comprise pistons arranged in cylinders and acted on by a pressure medium.
  • a first group of pistons is arranged in the track of the cutting knife and a second group at a distance therefrom, a piston each from the first group being operable with a piston each from the second group in pairs and in serial switching.
  • rollers may be provided which are arranged in a plane downwardly inclined from the cutting edge in such a way that each roller lies higher than each piston in its lowest end position.
  • plate shears comprising a frame, a lower knife and an upper knife movable thereagainst and movable along a track, a first group of vertically movable support members, a second group of vertically movable support members spaced from said first group, said groups being arranged in the track of the upper knife, a
  • locking device for at least each of the support members of the first group by means of which the support members can be held in such a position that their upper contact surfaces are flush with the table of the plate shears, and control means for unlocking each locking device after the upper knife has reached predetermined positions in the course of its movement along its track.
  • FIG. Us a schematic side elevation of the plate shears
  • FIG. 2 shows a schematic top plan view
  • FIG. 3 is a schematic front elevation prior to the cut
  • FIG. 4 as FIG. 3 but during the cut
  • FIGS. 5 and 6 show variations of a support organ.
  • the plate shears consist of a frame 1 which carries a table 2.
  • A-fixed knife 3 is connected to this table 2, and a movable knife 4 with cutting organ 5 is adapted to be displaced, as by pivoting, with respect to the fixed knives.
  • I-Iolddown means 6 servesto press a plate 7 to be cut onto'the table 2 and the cutting edge of the fixed knife.
  • a first group of support members for example in the form of pistons 9, and at a distance therefrom a second group of support members in the form of pistons 13 are located below the movable knife 4.
  • the two groups of support members support the plate and prevent deformationthereof.
  • a number of carriers 16 are also provided which include rotatable rollers 17.
  • the carriers 16 runat right angles to the cut edge and extend downwards between the pistons 9 and 13.
  • pivotal arms may be employed which seize the plate after it has been cut and on completion of a pivotal movement bring it out of the range of the plate shears for example onto a stack.
  • the pistons 9 are arranged in cylinders '12 and the pistons 13 in cylinders 15 in such a manner that by suitable action of pressure medium they can be moved upwardly.
  • pipes are attached below the cylinders 12 and 15 through which pressurized oil, for example, is passed.
  • the pistons 9 have notches wherein a pawl 20, movable radially with respect to the axis of the piston, engages.
  • the pawl is subject to the action of a spring 21 which presses the pawl against the piston 9 and is connected to one end of a double-arm lever 22 which is rotatable mounted at 23 on the cylinder 12.
  • a roller 24 is mounted on the other end of the lever 22 and the lever is pivoted about 23 via the roller by means of a cam 25.
  • the cylinder 12 receives the pressure medium via a nonretur'n valve 26 so that it is locked in its upper position by the pressure prevailing in the cylinder chamber 27.
  • a valve 28 serves for the unlocking through which the pressure'medium can be reduced. This valve 28 is likewise controlled by a cam 25.
  • the drive of the cam 25 is coupled wit the drive of the cutting knife 4 in such a manner that the cam completes a full rotation for each cutting cycle of the knife.
  • the shape of the cam isat the same time so chosen that the piston is arrested until shortly before the time when the plate is cut at this place.
  • FIG. 6 shows another embodiment.
  • the piston is provided with a notch wherein a pawl 29 engages.
  • the upper face of the pawl and the upper surface of the notch are chamfered so that pressure on the support face of the piston causes the pawl to slide out downwardly.
  • a hydraulic cylinder 30 with piston 31 is provided whose piston rod is supported against the pawl 29.
  • the cylinder 30 is provided with pressurized oil through a pipe 32.
  • the modus operandi is as follows:
  • rollers or balls may be arranged therebetween.
  • the downward movement of the pistons 9 and 13 normally a first group of vertically movable support members, a second group of vertically movable support members spaced from said first group, said groups being arranged in the track of the upper knife, a locking device for at least each of the support members of the first group by means of which the support members can be held in such a position that their upper contact surfaces are flush with the table of the plate shears, and
  • control means for unlocking each locking device after the upper knife has reached predetermined positions in the course of its movement along its track.
  • each locking device comprises a pawl movable at right angles to the axis of the support members, engageable in a suitably shaped notch in the support member, a spring for urging the pawl towards the notch and a lever for withdrawing the pawl from the notch,
  • each locking device' comprises a pawl movable at right angles to the axis of the support member, engageable in a suitably shaped notch in the support member and hydraulic means for urging the pawl towards the notch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
  • Shearing Machines (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Details Of Cutting Devices (AREA)
  • Control Of Cutting Processes (AREA)
US3600995D 1968-11-15 1969-11-17 Plate shears Expired - Lifetime US3600995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1116168A AT282303B (de) 1968-11-15 1968-11-15 Blechschere

Publications (1)

Publication Number Publication Date
US3600995A true US3600995A (en) 1971-08-24

Family

ID=3627135

Family Applications (1)

Application Number Title Priority Date Filing Date
US3600995D Expired - Lifetime US3600995A (en) 1968-11-15 1969-11-17 Plate shears

Country Status (6)

Country Link
US (1) US3600995A (de)
AT (1) AT282303B (de)
CH (1) CH488515A (de)
DE (1) DE1953855A1 (de)
FR (1) FR2023446A1 (de)
GB (1) GB1278114A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3670611A (en) * 1971-01-06 1972-06-20 David J Jarman Shear discharge conveying system
US3757621A (en) * 1970-02-20 1973-09-11 Intermenua Pty Ltd Guillotines and like shearing machines
US3760668A (en) * 1972-08-03 1973-09-25 Spaulding Inc Workpiece support/apparatus and method for shearing
US4246816A (en) * 1978-12-21 1981-01-27 Ivanoff Osmo O Sheet cutting apparatus
US4679473A (en) * 1983-11-09 1987-07-14 Amada Company, Limited Shearing machine
US6688205B1 (en) * 1998-02-10 2004-02-10 Du Pont Teijin Films Uk, Ltd. High speed cutting assembly
US7243586B2 (en) 2001-10-08 2007-07-17 Reinhard Keller Apparatus for cutting cushion-like packaging material
CN107803550A (zh) * 2017-12-13 2018-03-16 安徽东海机床制造有限公司 一种剪板机气动托料机构和控制系统及托料方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3544899A1 (de) * 1985-12-19 1987-07-02 Guenzburger Werkzeugmaschinenf Stuetzvorrichtung fuer abzutrennende streifen bei scher- bzw. schneidmaschinen
DE3630601A1 (de) * 1986-09-09 1988-03-17 Erbsloeh Julius & August Schereinrichtung zum abtrennen von metallprofilen, insbesondere von auf einem pressenauslauftisch abgelegten strangpressprofilen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2933966A (en) * 1957-03-29 1960-04-26 Cleveland Crane Eng Hydraulically operated work disposing table
US3260145A (en) * 1962-06-08 1966-07-12 Giordano Roger Francois Guillotines for shearing plate materials
US3492898A (en) * 1967-02-21 1970-02-03 Schloemann Ag Shears for trimming rolled metal sheets

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2933966A (en) * 1957-03-29 1960-04-26 Cleveland Crane Eng Hydraulically operated work disposing table
US3260145A (en) * 1962-06-08 1966-07-12 Giordano Roger Francois Guillotines for shearing plate materials
US3492898A (en) * 1967-02-21 1970-02-03 Schloemann Ag Shears for trimming rolled metal sheets

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757621A (en) * 1970-02-20 1973-09-11 Intermenua Pty Ltd Guillotines and like shearing machines
USRE28345E (en) * 1970-02-20 1975-02-25 Guillotines and like shearing machines
US3670611A (en) * 1971-01-06 1972-06-20 David J Jarman Shear discharge conveying system
US3760668A (en) * 1972-08-03 1973-09-25 Spaulding Inc Workpiece support/apparatus and method for shearing
US4246816A (en) * 1978-12-21 1981-01-27 Ivanoff Osmo O Sheet cutting apparatus
US4679473A (en) * 1983-11-09 1987-07-14 Amada Company, Limited Shearing machine
US6688205B1 (en) * 1998-02-10 2004-02-10 Du Pont Teijin Films Uk, Ltd. High speed cutting assembly
US7243586B2 (en) 2001-10-08 2007-07-17 Reinhard Keller Apparatus for cutting cushion-like packaging material
CN107803550A (zh) * 2017-12-13 2018-03-16 安徽东海机床制造有限公司 一种剪板机气动托料机构和控制系统及托料方法
CN107803550B (zh) * 2017-12-13 2023-08-01 安徽东海机床制造有限公司 一种剪板机气动托料机构和控制系统及托料方法

Also Published As

Publication number Publication date
GB1278114A (en) 1972-06-14
DE1953855A1 (de) 1970-07-23
FR2023446A1 (de) 1970-08-21
CH488515A (de) 1970-04-15
AT282303B (de) 1970-06-25

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